Question

我想在我的页面dynamicly中创建标签，例如用户将在文本框中choose标签的数量，并且我将使用.text =“XYZ显示此标签的编号”

感谢。

Answer 1

快速而脏的方法（此示例在ASP.NET页面上向PlaceHolder添加10个标签和文字：

Dim c As Integer = 0
While c < 10
    Dim lab As New Label()
    Dim ltr As New Literal()
    lab.Text = c.ToString()
    ltr.Text = "<br/>"
    PlaceHolder1.Controls.Add(lab)
    PlaceHolder1.Controls.Add(ltr)
    C+=1
End While

Answer 2

使用Repeater控件：

Using the ASP.NET Repeater Control

Data Repeater Controls in ASP.NET

Answer 3

要完成这项工作需要做很多事情，但只需动态创建控件并将其添加到页面中，您需要在ASPX页面上Placeholder：

<asp:TextBox ID="txtLabelCount" runat="server" />
<asp:Button ID="btnCreate" runat="server" Text="Create" /><br />
<asp:Placeholder ID="PlaceHolder1" runat="server" />

然后，在btnCreate的点击事件处理程序中：

' Number of labels to create. txtLabelCount should be validated to ensure only integers are passed into it
Dim labelCount As Integer = txtLabelCount.Text

For i As Integer = 0 To labelCount - 1
    ' Create the label control and set its text attribute
    Dim Label1 As New Label
    Label1.Text = "XYZ"

    Dim Literal1 As New Literal
    Literal1.Text = "<br />"

    ' Add the control to the placeholder
    PlaceHolder1.Controls.Add(Label1)
    PlaceHolder1.Controls.Add(Literal1)
Next

在ASP.NET（VB）上动态创建标签

3 个答案: